This question is posed by every house that has dirty ducts which need cleaning. The answer to this question is that it is still not well known whether cleaning up the ducts will necessarily have any potential outcome in ensuring good heath to people living in the house. According to the U.S. Environmental Protection Agency (EPA), it is difficult to establish that duct cleaning would actually prevent health problems. Researches have also failed to confirm that dust particles in the house are due to the dirty ducts. There are many other channels for them to find their way inside your house, such as from outdoor cooking, cleaning, smoking and many more.